SIM7600e Mini - MQTT Connection using AT Command -Configuration Issue

Need some support in getting the configuration completed for SIM7600e. I have been trying to execute the AT command and publish MQTT message but it somehow gets hung while setting MQTT topic or while setting MQTT message. Sharing herewith the screenshot.

I have tried to follow the example in the SIM COM MQTT pdf document (Page 27 - Connect with Will Topic)

  1. Sequence of commands used -

AT+CMQTTSTART
AT+CMQTTACCQ=0,“client z1”
AT+CMQTTCONNECT=0,“tcp://:8000”,120,1
AT+CMQTTTOPIC=0,13
AT+CMQTTPAYLOAD=1,62
AT+CMQTTPUB=1,1,60

  1. I did try both CMQTTTOPIC and CMQTTWILLTOPIC. Got into same issue.

  2. If you see in the below snapshot after the CMQTTWILLMSG, it just hungs without giving OK or Error response.

image